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09-19-2017, 05:00 PM   #1
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suggestions needed for rear curtain flash on 645z

I've read that rear curtain flash is a function of the Pentax speedlight not the camera
(Is that correct?)

1) Do I need to purchase Pentax speedlights?
(Not excited about that but I can get over it)
2) What brand/model of trigger would transmit properly between the Pentax speedlight & the camera to obtain a trailing effect?
(I don't really want to use the speedlight directly on the hot shoe)

I've done second curtain flash on my Canons without any issue but it's in the camera flash function menu

Thank you in advance

09-20-2017, 07:46 AM   #2
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Never having thought about this, but getting ready for night shots at the upcoming State Fair I thought I'd try the Slow Sync option with a non P-TTL flash in the hot shoe and see if that works. Nope.

Manual. Nope.

Various auto modes. Nope.

Looks to me like you get front curtain sync regardless of what you do if it's not a dedicated flash.

This came as a real surprise, as rear curtain sync is such a simple deal It never occurred to me that might be an issue. Apparently, somebody decided to do slow sync with software instead of a simple mechanical switch in the body. A Live View accomidation thing maybe ?

Last edited by postnobills; 09-20-2017 at 08:31 AM.

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645d, 645z, camera, curtain, curtain flash, flash, function, medium format, pentax, speedlight
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